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To: 9front@9front.org
From: Michael Forney <mforney@mforney.org>
Date: Thu, 18 Feb 2021 08:58:35 +0000
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X-Bullshit: immutable non-blocking engine template proxy-aware manager 
Subject: [9front] boot/efi: support framebuffer with 64-bit base address
Reply-To: 9front@9front.org
Precedence: bulk


My thinkpad t14 (amd) uses a framebuffer at 0x460000000, which got
truncated to 0x60000000 in *bootscreen.

diff a93cbc303473d336ddd224ac6198bf4499a181b8 e7f36397ace2aaaf16a643080dcc439c5b061613
--- a/sys/src/boot/efi/sub.c	Tue Feb 16 15:51:37 2021
+++ b/sys/src/boot/efi/sub.c	Thu Feb 18 00:58:35 2021
@@ -306,8 +306,8 @@
 char*
 hexfmt(char *s, int i, uvlong a)
 {
-	if(i > 8){
-		s = numfmt(s, 16, i-8, a>>32);
+	if(i > 8 || i == 0 && (a>>32) != 0){
+		s = numfmt(s, 16, i ? i-8 : 0, a>>32);
 		i = 8;
 	}
 	return numfmt(s, 16, i, a);